Number of different values of i^2+j^2 for i,j in [ 0,n ].
1, 3, 6, 10, 15, 20, 27, 34, 42, 51, 61, 71, 83, 94, 106, 120, 135, 148, 165, 180, 198
1 seqfan posts
Fri Aug 14 23:14:59 CEST 2009 [seqfan] Sparse Rulers and Golomb Rulers in two dimensions